JP4298829B2 - Scroll compressor - Google Patents

Scroll compressor Download PDF

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Publication number
JP4298829B2
JP4298829B2 JP33212898A JP33212898A JP4298829B2 JP 4298829 B2 JP4298829 B2 JP 4298829B2 JP 33212898 A JP33212898 A JP 33212898A JP 33212898 A JP33212898 A JP 33212898A JP 4298829 B2 JP4298829 B2 JP 4298829B2
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JP
Japan
Prior art keywords
bearing
oil supply
oil
scroll
compressor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP33212898A
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Japanese (ja)
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JP2000161267A (en
Inventor
睦憲 松永
貴寛 田村
和夫 櫻井
優 太田原
裕規 ▲高▼瀬
浩幸 今村
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Hitachi Ltd
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Hitachi Ltd
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Filing date
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Priority to JP33212898A priority Critical patent/JP4298829B2/en
Publication of JP2000161267A publication Critical patent/JP2000161267A/en
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Description

【0001】
【発明の属する技術分野】
本発明は、冷凍、空調用の冷媒圧縮機、空気やその他のガス圧縮機として好適なスクロール圧縮機に関する。
【0002】
【従来の技術】
電動機部の上側及び下側にそれぞれ軸受を備えたスクロール圧縮機における軸受給油については、特開平3−37390号公報に記載されている。
【0003】
【発明が解決しようとする課題】
上記した従来技術の図6に示すように、電動機の上側及び下側にそれぞれ軸受を備えると、回転軸の振れ回りや軸の傾きが小さくなり、広い回転速度域で安定した運転ができるという利点が得られる。しかしながら、この従来技術のように吐出ガスに含まれる油により主軸受及びそれと反対側の副軸受へ給油する構造では、運転条件により冷媒循環量が変化することになり、それに伴って吐出ガスの速度が変化するので、運ばれる油量が変化すると共に、主副両軸受まわりでの吐出ガスとの分離度合が変化し、そのため給油量が安定せず給油不足によるフレーキングやかじり、焼付きが発生するおそれがあった。
【0004】
本発明は、上記した問題点に鑑みてなされたものであり、その目的は、主副両軸受部のうち副軸受部を玉またはころ軸受で構成することで広い回転速度域で安定した運転ができると共に、運転条件により冷媒等の循環量が変化しても電動機部の上側及び下側における主軸受及び副軸受への給油が確実に行われるようにしたスクロール圧縮機を提供することにある。
【0005】
【課題を解決するための手段】
上記目的を達成するため、本発明によるスクロール圧縮機は、特許請求の範囲請求項1ないし3に記載されたところを特徴とするものであるが、特に独立項としての請求項1に係る発明によるスクロール圧縮機は、密閉容器の内部に、台板に渦巻き状のラップを直立させた固定スクロール及び旋回スクロールを互いに噛み合わせて旋回スクロールの台板背面を回転軸のクランクピン部に係合した圧縮機部と、該圧縮機部の下側にあって前記回転軸を駆動する電動機部と、該電動機部の上側及び下側に配置されて前記回転軸を支持する主軸受部及び副軸受部と、前記密閉容器の内部または外部の油溜まりから前記回転軸内に設けた給油孔を通して前記主軸受部へ潤滑油を給油するための給油手段と、を備えてなるスクロール圧縮機において、前記副軸受部における軸受を玉またはころ等の転動体を有する軸受で構成すると共に、該玉またはころ軸受を収納する軸受凾と前記回転軸との間にシール部材を設け、前記軸受凾内部を該軸受凾外部の前記密閉容器内における吐出圧内部空間に対して密閉し、玉またはころ軸受の前記転動体間の隙間が、前記密閉容器の内部または外部の油溜まりと前記回転軸内の給油孔とを結ぶ給油通路の一部となるようにしたことを特徴とするものである。
【0006】
【発明の実施の形態】
以下、本発明のスクロール圧縮機の実施例について説明する。
【0007】
図1は、スクロール圧縮機の断面図である。密閉容器9の内部には、上方に圧縮機部6、その下側に電動機部8、さらにその下側に油溜まり12が配設されており、回転軸3を介して圧縮機部6と電動機部8とが連結されている。圧縮機部6は、台板1aに渦巻き状のラップ1bを直立させた固定スクロール1と、台板2aに渦巻き状のラップ2bを直立させた旋回スクロール2とを、ラップを互いに噛み合わせて形成し、固定スクロール1には吸入口1c、吐出口1dが設けられている。上記回転軸3は、電動機部8の上側及び下側にそれぞれ配置した主軸受部7及び副軸受部10に支持されている。副軸受部10は下フレーム9dを介して密閉容器9に固定されている。回転軸3の先端にはクランクピン部3aを備え、該クランクピン部3aが旋回スクロール2の台板2aの下方に突設したボス2cに挿入されている。ボス2c内には旋回軸受2eが設けられており、クランクピン部3aと摺動する構造となっている。旋回スクロール2の台板2aの背面にはオルダム継手5が配設されている。該オルダム継手5は、旋回スクロール2を固定スクロール1に対し自転することなく旋回運動させる自転防止機構を構成するものである。
【0008】
上記圧縮機部6は、電動機部8に連結した回転軸3の回転によりクランクピン部3aが偏心回転すると旋回スクロール2がオルダム継手5の自転防止機構により固定スクロール1に対し自転することなく旋回運動を行い、ガスを吸入管9a及び吸入口1cを介して固定スクロールラップ1a及び旋回スクロールラップ2aで形成される密閉室に吸入する。上記旋回運動により、密閉室は中央部へ移動しながら容積を減少してガスを圧縮し、圧縮ガスを吐出口1dより吐出室9cに吐出する。吐出室9cに吐出されたガスは、圧縮機部6及び電動機部8の周囲の吐出圧内部空間9e内を循環したのち吐出管9bから圧縮機外へ放出される。
【0009】
次に差圧給油方式の給油経路について説明する。旋回スクロールの台板2aには、ラップを組合わせて形成した圧縮室と旋回スクロール台板2a背面の背圧室4cを連通させる背圧孔2dが設けられており、背面室4c内の圧力(背圧)を吸入圧力と吐出圧力の中間の圧力に保っている。フレーム4に設けられたシール軸受部4bは背圧室4cへの吐出ガス流入を防いでいる。一方、油溜まり12は吐出圧力下にあり、この吐出圧力と背圧の差圧力を利用して給油する方式が差圧給油方式である。図2は、副軸受部10付近の拡大断面図である。副軸受部10は、軸受凾10dの内部に玉軸受10aを組付け、該玉軸受10aを密閉容器9内における吐出圧内部空間9eに対して密封するためのシール部材10cを玉軸受10aの上部に備えた構造となっている。回転軸3には玉軸受10aとの嵌合部の上部に回転軸方向の給油孔3bに貫通する横孔3cが設けられている。回転軸3の下端には閉止部材3dが組込まれている。油溜まり12の油は軸受凾10dに固定された給油管11を介して軸受凾10d内に入り、玉軸受10aを潤滑しながら転動体10bの間を通り玉軸受10aの上部に抜け、横孔3cから給油孔3bに入る。シール部材10cは、軸受凾10d外部からの冷媒ガスの混入または軸受凾10d内部から外部への油の流出を防止している。給油孔3bに入った油は旋回軸受2eの軸受隙間を通る経路と横孔3eからシール軸受部4bの軸受隙間および主軸受部7を通る2つの経路を経て背圧室4cへ入る。背圧室4cに入った油は、背圧孔2dから圧縮室に入り吐出口1dから圧縮された冷媒ガスとともに密閉容器9の吐出室9c内に吐出される。油は密閉容器9の吐出圧内部空間9e内で冷媒ガスと分離され油溜まり12へ戻る。
【0010】
図3は、油溜まりを外部に設けた例である。油タンク13が密閉容器9の外部に設けられており、油タンク13内の油溜まり13aと副軸受部10の軸受凾10dを油配管13b及び給油管13cでつないでいる。また、油タンク13の油溜まり13aの上部空間13dと密閉容器9の吐出管9bとは吐出配管13eでつながれている。油タンク13内の圧力は吐出圧力であり、この吐出圧力と背圧の差圧力で油溜まり13a内の油が油配管13bを介して軸受凾10dに導かれる。軸受凾10dから吐出管9bまでの油経路は前述の例と同様である。密閉容器9内に吐出された油は冷媒ガスとともに吐出配管13eを通り油タンク13に入り、該油タンク13内で冷媒ガスと分離されて油溜まり13aに戻る。
【0011】
図4は、副軸受部10をころ軸受10aで構成した例である。油は玉軸受10aの場合と同様にころ軸受10aを潤滑しながら転動体10bの間を通りころ軸受10aの下から上へ抜ける。ころ軸受10aの上部に抜けた油は横孔3cから給油孔3bに入る。
【0012】
図5は、軸受凾10aの下部に給油ポンプ14を組込んだ例である。油溜まり12の油は給油ポンプ14により軸受凾10d内に導かれ、前述の例と同様に給油孔3bに入る。本実施例では、密閉容器内の圧力が吸入圧力、吐出圧力どちらでも構成が可能である。
【0013】
【発明の効果】
本発明によれば、主副両軸受部のうち副軸受部を玉またはころ軸受で構成することで広い回転速度域で安定した運転ができると共に、運転条件により冷媒等の循環量が変化しても主副両軸受部への給油が確実となり、給油不足による玉またはころ軸受のフレーキングやかじり、焼付きなどが防止でき、信頼性の高いスクロール圧縮機を提供することが可能となる。
【図面の簡単な説明】
【図1】本発明の第1実施例によるスクロール圧縮機の断面図を示す。
【図2】本発明の第1実施例における副軸受部の拡大断面図を示す。
【図3】本発明の第2実施例によるスクロール圧縮機及び外部油タンクシステム図を示す。
【図4】本発明の第3実施例における副軸受部の拡大断面図を示す。
【図5】本発明の第4実施例における副軸受部の拡大断面図を示す。
【図6】主副両軸受部を備えた従来例によるスクロール圧縮機の断面図を示す。
【符号の説明】
1…固定スクロール
1a…台板
1b…ラップ
1c…吸込口
1d…吐出口
2…旋回スクロール
2a…台板
2b…ラップ
2c…ボス
2d…背圧孔
2e…旋回軸受
3…回転軸
3a…クランクピン部
3b…給油孔
3c…横孔
3d…閉止部材
3e…横孔
4…フレーム
4a…軸受凾部
4b…シール軸受部
4c…背圧室
5…オルダム継手
6…圧縮機部
7…主軸受部
7a…ころ軸受
8…電動機部
9…密閉容器
9a…吸入管
9b…吐出管
9c…吐出室
9d…下フレーム
9e…吐出圧内部空間
10…副軸受部
10a…玉またはころ軸受
10b…転動体
10c…シール部材
10d…軸受凾
10e…ボルト
11…給油管
12…油溜まり
13…油タンク
13a…油溜まり
13b…油配管
13c…給油管
13d…上部空間
13e…吐出配管
13f…吐出配管
14…給油ポンプ
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a scroll compressor suitable as a refrigerant compressor for refrigeration and air conditioning, and an air or other gas compressor.
[0002]
[Prior art]
Bearing oil supply in a scroll compressor provided with bearings on the upper side and the lower side of the electric motor section is described in Japanese Patent Laid-Open No. 3-37390.
[0003]
[Problems to be solved by the invention]
As shown in FIG. 6 of the prior art described above, when bearings are provided on the upper side and the lower side of the electric motor, respectively, an advantage is that the rotation of the rotating shaft and the inclination of the shaft are reduced, and stable operation can be performed in a wide rotational speed range. Is obtained. However, in the structure in which the oil contained in the discharge gas supplies oil to the main bearing and the auxiliary bearing on the opposite side as in this prior art, the refrigerant circulation amount changes depending on the operating conditions, and accordingly the speed of the discharge gas As a result, the amount of oil carried changes, and the degree of separation from the discharge gas around the main and sub-bearings changes, so the amount of oil is not stable and flaking, galling, and seizure occur due to insufficient oil supply. There was a risk.
[0004]
The present invention has been made in view of the above-described problems, and its purpose is to achieve stable operation in a wide rotational speed range by configuring the sub-bearing portion of the main and sub-bearing portions with ball or roller bearings. Another object of the present invention is to provide a scroll compressor that can reliably supply oil to a main bearing and a sub-bearing on the upper side and the lower side of an electric motor section even if the circulation amount of a refrigerant or the like changes depending on operating conditions.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a scroll compressor according to the present invention is characterized by what is stated in claims 1 to 3, and in particular according to the invention according to claim 1 as an independent claim. The scroll compressor is a compression in which a fixed scroll and an orbiting scroll in which a spiral wrap is placed upright on a base plate are meshed with each other, and the back surface of the orbiting scroll is engaged with a crankpin portion of a rotary shaft inside a sealed container. A motor unit that is below the compressor unit and drives the rotating shaft, and a main bearing unit and a sub-bearing unit that are disposed above and below the motor unit and support the rotating shaft. An oil supply means for supplying lubricating oil to the main bearing portion through an oil supply hole provided in the rotary shaft from an oil reservoir inside or outside the sealed container, A bearing in the sub-bearing portion with constituting a bearing having rolling elements such as balls or rollers, a seal member provided between the rotary shaft and the shaft受凾for accommodating the ball or roller bearings, the shaft受凾internal the It sealed against the discharge pressure internal portion space in the closed container of the bearing凾外portion, the gap between the rolling elements of the ball or roller bearings, lubrication inside the sealed container or external oil reservoir and the rotation in the shaft It is characterized by being a part of an oil supply passage connecting the holes.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the scroll compressor according to the present invention will be described below.
[0007]
FIG. 1 is a cross-sectional view of a scroll compressor. Inside the airtight container 9, a compressor unit 6 is disposed above, a motor unit 8 is disposed below the compressor unit 6, and an oil sump 12 is disposed below the compressor unit 6, and the compressor unit 6 and the motor are disposed via the rotary shaft 3. The part 8 is connected. The compressor unit 6 is formed with a fixed scroll 1 in which a spiral wrap 1b is erected on a base plate 1a and a revolving scroll 2 in which a spiral wrap 2b is erected on a base plate 2a by meshing the wraps with each other. The fixed scroll 1 is provided with a suction port 1c and a discharge port 1d. The rotating shaft 3 is supported by a main bearing portion 7 and a sub-bearing portion 10 that are respectively arranged on the upper side and the lower side of the electric motor unit 8. The auxiliary bearing portion 10 is fixed to the hermetic container 9 via the lower frame 9d. A crankpin portion 3 a is provided at the tip of the rotary shaft 3, and the crankpin portion 3 a is inserted into a boss 2 c protruding below the base plate 2 a of the orbiting scroll 2. A slewing bearing 2e is provided in the boss 2c, and has a structure that slides with the crankpin portion 3a. An Oldham joint 5 is disposed on the back surface of the base plate 2 a of the orbiting scroll 2. The Oldham joint 5 constitutes an anti-rotation mechanism that makes the orbiting scroll 2 orbit with respect to the fixed scroll 1 without rotating.
[0008]
When the crankpin portion 3a rotates eccentrically by the rotation of the rotary shaft 3 connected to the motor portion 8, the compressor portion 6 turns without turning the orbiting scroll 2 relative to the fixed scroll 1 by the rotation prevention mechanism of the Oldham joint 5. The gas is sucked into the sealed chamber formed by the fixed scroll wrap 1a and the orbiting scroll wrap 2a through the suction pipe 9a and the suction port 1c. Due to the swivel motion, the sealed chamber moves to the central portion and the volume is reduced to compress the gas, and the compressed gas is discharged from the discharge port 1d to the discharge chamber 9c. The gas discharged into the discharge chamber 9c circulates in the discharge pressure internal space 9e around the compressor unit 6 and the motor unit 8, and then is discharged from the discharge pipe 9b to the outside of the compressor.
[0009]
Next, the oil supply path of the differential pressure oil supply method will be described. The orbiting scroll base plate 2a is provided with a back pressure hole 2d for communicating a compression chamber formed by combining wraps with the back pressure chamber 4c on the back of the orbiting scroll base plate 2a. (Back pressure) is maintained at an intermediate pressure between the suction pressure and the discharge pressure. A seal bearing portion 4b provided on the frame 4 prevents discharge gas from flowing into the back pressure chamber 4c. On the other hand, the oil reservoir 12 is under a discharge pressure, and a system for supplying oil using a differential pressure between the discharge pressure and the back pressure is a differential pressure oil supply system. FIG. 2 is an enlarged cross-sectional view in the vicinity of the auxiliary bearing portion 10. The auxiliary bearing portion 10 is assembled with a ball bearing 10a inside the bearing rod 10d , and a seal member 10c for sealing the ball bearing 10a against the discharge pressure internal space 9e in the sealed container 9 is provided above the ball bearing 10a. It has a structure prepared for. The rotating shaft 3 is provided with a lateral hole 3c penetrating the oil supply hole 3b in the rotating shaft direction at the upper part of the fitting portion with the ball bearing 10a. A closing member 3 d is incorporated at the lower end of the rotating shaft 3. The oil in the oil sump 12 enters the bearing rod 10d through the oil supply pipe 11 fixed to the bearing rod 10d, passes through the rolling elements 10b while lubricating the ball bearing 10a, and passes to the upper portion of the ball bearing 10a. The oil supply hole 3b enters from 3c. The seal member 10c prevents the refrigerant gas from entering from the outside of the bearing rod 10d or the oil from flowing out from the inside of the bearing rod 10d. The oil that has entered the oil supply hole 3b enters the back pressure chamber 4c through a path passing through the bearing clearance of the slewing bearing 2e and two paths passing through the bearing clearance of the seal bearing portion 4b and the main bearing portion 7 from the lateral hole 3e. The oil that has entered the back pressure chamber 4c enters the compression chamber through the back pressure hole 2d and is discharged into the discharge chamber 9c of the sealed container 9 together with the refrigerant gas compressed from the discharge port 1d. The oil is separated from the refrigerant gas in the discharge pressure internal space 9 e of the sealed container 9 and returns to the oil reservoir 12.
[0010]
FIG. 3 shows an example in which an oil reservoir is provided outside. An oil tank 13 is provided outside the sealed container 9, and an oil reservoir 13a in the oil tank 13 and a bearing rod 10d of the auxiliary bearing portion 10 are connected by an oil pipe 13b and an oil supply pipe 13c. The upper space 13d of the oil reservoir 13a of the oil tank 13 and the discharge pipe 9b of the sealed container 9 are connected by a discharge pipe 13e. The pressure in the oil tank 13 is a discharge pressure, and the oil in the oil reservoir 13a is guided to the bearing rod 10d through the oil pipe 13b by the differential pressure between the discharge pressure and the back pressure. The oil path from the bearing rod 10d to the discharge pipe 9b is the same as in the above example. The oil discharged into the hermetic container 9 passes through the discharge pipe 13e together with the refrigerant gas and enters the oil tank 13, where it is separated from the refrigerant gas and returns to the oil reservoir 13a.
[0011]
FIG. 4 is an example in which the auxiliary bearing portion 10 is configured by a roller bearing 10a. As with the ball bearing 10a, the oil passes between the rolling elements 10b and escapes from the bottom to the top while lubricating the roller bearing 10a. The oil that has fallen into the upper part of the roller bearing 10a enters the oil supply hole 3b through the lateral hole 3c.
[0012]
FIG. 5 shows an example in which an oil supply pump 14 is incorporated in the lower part of the bearing rod 10a. The oil in the oil reservoir 12 is guided into the bearing rod 10d by the oil supply pump 14, and enters the oil supply hole 3b as in the above example. In the present embodiment, the pressure in the sealed container can be configured with either the suction pressure or the discharge pressure.
[0013]
【The invention's effect】
According to the present invention, by configuring the auxiliary bearing portion of the main auxiliary auxiliary bearing portion with a ball or a roller bearing, stable operation can be performed in a wide rotational speed range, and the circulation amount of the refrigerant or the like changes depending on the operation conditions. In addition, oil supply to the main and sub bearing parts can be ensured, and flaking, galling and seizure of the ball or roller bearing due to insufficient oil supply can be prevented, and a highly reliable scroll compressor can be provided.
[Brief description of the drawings]
FIG. 1 shows a cross-sectional view of a scroll compressor according to a first embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view of a sub bearing portion in the first embodiment of the present invention.
FIG. 3 shows a scroll compressor and external oil tank system diagram according to a second embodiment of the present invention.
FIG. 4 is an enlarged sectional view of a sub-bearing portion in a third embodiment of the present invention.
FIG. 5 is an enlarged cross-sectional view of a secondary bearing portion in a fourth embodiment of the present invention.
FIG. 6 is a cross-sectional view of a conventional scroll compressor provided with main and sub both bearings.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Fixed scroll 1a ... Base plate 1b ... Lap 1c ... Suction port 1d ... Discharge port 2 ... Orbiting scroll 2a ... Base plate 2b ... Wrap 2c ... Boss 2d ... Back pressure hole 2e ... Swivel bearing 3 ... Rotating shaft 3a ... Crank pin Portion 3b ... Oil supply hole 3c ... Horizontal hole 3d ... Close member 3e ... Horizontal hole 4 ... Frame 4a ... Bearing flange 4b ... Seal bearing portion 4c ... Back pressure chamber 5 ... Oldham joint 6 ... Compressor portion 7 ... Main bearing portion 7a ... Roller bearing 8 ... Electric motor part 9 ... Sealed container 9a ... Suction pipe 9b ... Discharge pipe 9c ... Discharge chamber 9d ... Lower frame 9e ... Discharge pressure inner space 10 ... Sub-bearing part 10a ... Ball or roller bearing 10b ... Rolling element 10c ... Seal member 10d ... Bearing shaft 10e ... Bolt 11 ... Oil supply pipe 12 ... Oil reservoir 13 ... Oil tank 13a ... Oil reservoir 13b ... Oil pipe 13d ... Oil supply pipe 13d ... Upper space 13e ... Discharge pipe 13f ... Discharge pipe 14 ... Oil supply pump

Claims (3)

密閉容器の内部に、台板に渦巻き状のラップを直立させた固定スクロール及び旋回スクロールを互いに噛み合わせて旋回スクロールの台板背面を回転軸のクランクピン部に係合した圧縮機部と、該圧縮機部の下側にあって前記回転軸を駆動する電動機部と、該電動機部の上側及び下側に配置されて前記回転軸を支持する主軸受部及び副軸受部と、前記密閉容器の内部または外部の油溜まりから前記回転軸内に設けた給油孔を通して前記主軸受部へ潤滑油を給油するための給油手段と、を備えてなるスクロール圧縮機において、
前記副軸受部における軸受を玉またはころ等の転動体を有する軸受で構成すると共に、該玉またはころ軸受を収納する軸受凾と前記回転軸との間にシール部材を設け、前記軸受凾内部を該軸受凾外部の前記密閉容器内における吐出圧内部空間に対して密閉し、該玉またはころ軸受の前記転動体間の隙間が、前記密閉容器の内部または外部の油溜まりと前記回転軸内の給油孔とを結ぶ給油通路の一部となるようにしたことを特徴とするスクロール圧縮機。
A compressor part in which a fixed scroll and a turning scroll in which a spiral wrap is placed upright on a base plate are engaged with each other inside the sealed container, and the back surface of the base plate of the orbiting scroll is engaged with the crankpin part of the rotary shaft, An electric motor section that is below the compressor section and drives the rotary shaft; a main bearing section and an auxiliary bearing section that are disposed above and below the electric motor section to support the rotary shaft; and In a scroll compressor comprising: an oil supply means for supplying lubricating oil to the main bearing portion through an oil supply hole provided in the rotary shaft from an internal or external oil reservoir,
The bearing in the sub-bearing portion is constituted by a bearing having rolling elements such as balls or rollers, and a seal member is provided between the bearing rod housing the ball or roller bearing and the rotating shaft, and the inside of the bearing rod is It seals with respect to the discharge pressure internal space in the said airtight container in the outside of this bearing rod, and the clearance gap between the said rolling elements of this ball | bowl or a roller bearing is the oil reservoir inside the said airtight container, or the outside in the said rotating shaft. A scroll compressor characterized by being a part of an oil supply passage connecting the oil supply holes.
前記給油手段は、前記圧縮機部における圧縮途中の中間圧と前記油溜まりにおける吐出圧との差圧を利用した差圧給油手段であることを特徴とする請求項1記載のスクロール圧縮機。  The scroll compressor according to claim 1, wherein the oil supply means is a differential pressure oil supply means using a differential pressure between an intermediate pressure during compression in the compressor section and a discharge pressure in the oil reservoir. 前記給油手段は、前記回転軸の下端に直結されたポンプ給油手段であることを特徴とする請求項1記載のスクロール圧縮機。  The scroll compressor according to claim 1, wherein the oil supply means is pump oil supply means directly connected to a lower end of the rotating shaft.
JP33212898A 1998-11-24 1998-11-24 Scroll compressor Expired - Fee Related JP4298829B2 (en)

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KR101451663B1 (en) 2007-07-30 2014-10-21 엘지전자 주식회사 Hermetric compressor and refrigeration cycle device having the same

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